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Isokinetic muscle torque and endurance in limbs and trunk in children and adolescents: A longitudinal study
Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, Björn Ekblom's research group.ORCID iD: 0000-0002-5574-4408
Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, Björn Ekblom's research group.ORCID iD: 0000-0002-0613-4806
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2019 (English)In: Clinical and Medical Investigations, ISSN 2398-5763, Vol. 4, no 4Article in journal (Refereed) Published
Abstract [en]

Purpose: To measure isokinetic peak torque during elbow, knee and trunk extension and flexion and muscle endurance during elbow and knee extension.

Method: Muscle endurance and peak torque were measured using Cybex methodology in totally 115 boys and 48 girls from 8 to 15 years of age most of them for five years.

Results: Knee muscle endurance was mainly unchanged while elbow fatigue index was lightly reduced from 11 to 15 years in both sexes with no difference between sexes. From the youngest ages to adolescence peak absolute (N.m) and normalized (N.m/kg body mass) torque increases in all measures with highest increase in the trunk and lowest in elbow activities. During elbow activity boys are stronger than girls from age 11. For trunk and knee activity the sex differences start at age 14 years. Knee, elbow and trunk extension/flexion ratios as well as knee/elbow both extension and flexion ratios are mainly unchanged with increasing age with no differences between sexes.

Conclusion: Data indicate that elbow isokinetic strength and endurance profile is partly different from corresponding data during knee and trunk activity.

Place, publisher, year, edition, pages
OA text , 2019. Vol. 4, no 4
Keywords [en]
cybex, sex differences, elbow, knee, trunk flexion, extension
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
URN: urn:nbn:se:gih:diva-5968DOI: 10.15761/CMI.1000197OAI: oai:DiVA.org:gih-5968DiVA, id: diva2:1380753
Available from: 2019-12-19 Created: 2019-12-19 Last updated: 2019-12-20Bibliographically approved

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Godhe, ManneHelge, TorbjörnEkblom, Björn

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